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분수: 분모가 다른 덧셈4분수1

1
1 5
+
6 4
=
34 20
1
+
6
=
17 10
2
6 4
+
4 6
=
26 12
6
+
4
=
13 6
3
6 4
+
7 7
=
70 28
6
+
7
=
5 2
4
7 7
+
5 3
=
56 21
7
+
5
=
8 3
5
3 3
+
1 7
=
24 21
3
+
1
=
8 7
6
7 2
+
1 7
=
51 14
7
1 4
+
2 5
=
13 20
8
2 5
+
7 2
=
39 10
9
7 2
+
4 3
=
29 6
10
1 3
+
3 4
=
13 12
11
4 3
+
7 2
=
29 6
12
7 2
+
3 6
=
24 6
7
+
3
=
4
13
1 6
+
2 4
=
8 12
1
+
2
=
2 3
14
2 4
+
4 9
=
34 36
2
+
4
=
17 18
15
4 9
+
2 2
=
26 18
4
+
2
=
13 9